Scirocco Central

Morning all. Ive currently owned my mk3 scirocco for nearly 2 years. Recently i needed to change the rear wiper blade as it was juddering. Not a hard job to do but with the new blade on it was still juddering. So with it being bosch i took it back to where i got it from and they exchanged it no problem. However the juddering is still happening. Could it be the motor? Any help would be appreciated as its reall annoying. Thanks.

I assume you have given the rear screen a good clean to remove road film and contaminants. It could be the spring on the wiper arm not providing enough force that is causing it to judder.